Experimental study on SC RF cavities by using China large grain niobium for ILC

ZONG Zhan-Guo; GAO Jie; XU Qing-Jin; ZHAI Ji-Yuan; GE Ming-Qi; GU Jun; LIU Li-Qiang; ZHANG Liang

doi:10.1088/1674-1137/32/2/015

Chinese Physics C> 2008, Vol. 32> Issue(2) : 151-155 DOI: 10.1088/1674-1137/32/2/015

Experimental study on SC RF cavities by using China large grain niobium for ILC

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Abstract：
Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibility to achieve high gradient by large grain cavities, two 1.3GHz cavities were made of China large grain niobium and a series of vertical tests were carried out following several different surfaces treatment procedures. Two cavities have both reached the high gradient of more than 43MV/m repeatedly and the maximum accelerating field of 47.9MV/m has been achieved by China large grain niobium. This paper introduces the features of the fabrication and surface treatments on the large grain cavities and presents the preliminary results of the research.

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ZONG Zhan-Guo, GAO Jie, XU Qing-Jin, ZHAI Ji-Yuan, GE Ming-Qi, GU Jun, LIU Li-Qiang and ZHANG Liang. Experimental study on SC RF cavities by using China large grain niobium for ILC[J]. Chinese Physics C, 2008, 32(2): 151-155. doi: 10.1088/1674-1137/32/2/015

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Received: 2007-04-06
Revised: 2007-05-10

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental study on SC RF cavities by using China large grain niobium for ILC

Corresponding author: ZONG Zhan-Guo,

Received Date: 2007-04-06
Accepted Date: 2007-05-10
Available Online: 2008-02-05

Abstract: Large grain niobium has the potential of simplifying the production sequence and consequently reducing the cost of the superconducting RF cavities for ILC. To investigate the feasibility of fabrication and the possibility to achieve high gradient by large grain cavities, two 1.3GHz cavities were made of China large grain niobium and a series of vertical tests were carried out following several different surfaces treatment procedures. Two cavities have both reached the high gradient of more than 43MV/m repeatedly and the maximum accelerating field of 47.9MV/m has been achieved by China large grain niobium. This paper introduces the features of the fabrication and surface treatments on the large grain cavities and presents the preliminary results of the research.